We are hoping to get a 100D for ~$60k. Figure that the 2017 100Ds should start coming off lease in big numbers soon, since they stopped making the 90D in June 2017, per Wikipedia.
We almost bought a 2016 90D. Even had it delivered to our house last week. The battery was in great shape, only 5% degradation after 53k miles. The car was in very good shape, too. The only reason we didn’t complete the deal is because it’s the first time we sat in the ventilated seats and they just didn’t feel as comfortable as the non-ventilated seats we had sat in in a 2018 X.